argument over a film by taking the prophet mohammed which is led to protests and violence and attacks from libya to egypt to yemen to pakistan, just in the last few days. we see this debate over how islam is supposed to deal with dissent, how islam is supposed to do with other kinds of people, how islam is supposed to do with this agreement and also to deal with insult. it's clearly a very offensive but the question is how do you respond to them, what constructively do you do about that? and this was on my mind a few years ago as i wrote this book. i felt that this is a single day that eliminates a lot of the ongoing struggles in our world. that's what i wanted to go there, and i'm sad to say that some of the places and people that i detected in the book have been caught up again in about protests in the last few days. >> what's the genesis of this book? you tell the story about why you wrote this book. >> yeah, i'm a reporter. i started going to the city of karachi, pakistan in 2002. at first is just a place that has to on the way to cover the war in afghanistan. later in the place i was assign